ATS-Mini — All-Band Radio Receiver Firmware for T-Embed SI4732
Community firmware for the LILYGO T-Embed SI4732 transforming it into a capable AM/FM/SW/SSB receiver with spectrum waterfall display, band scanning, memory presets, and modern touchscreen UI.
Overview
ATS-Mini is the most active community firmware (425+ GitHub stars) for ESP32-S3 + SI4732 radio receivers. It transforms the LILYGO T-Embed SI4732 into a capable all-band portable radio with AM, FM, shortwave, and SSB (single sideband) reception — all controlled via the rotary encoder and displayed on the 1.9" IPS screen with a real-time spectrum waterfall.
Key Features
- All-Band Reception: AM, FM, shortwave (SW), longwave (LW), and SSB demodulation
- Spectrum Waterfall: Real-time frequency spectrum visualization on the color display
- Band Scanning: Automatic scanning across amateur radio bands, broadcast bands, and shortwave
- Memory Presets: Store and recall favorite frequencies
- Modern UI: Clean, responsive interface designed for the T-Embed's display and rotary encoder
- Battery Powered: Runs on the T-Embed SI4732's built-in 900mAh battery for portable listening
Getting Started
Flash the ATS-Mini firmware via Arduino IDE or PlatformIO. The T-Embed SI4732 requires no additional hardware — the SI4732-A10 radio chip, antenna connector, audio output, and controls are all built in. Connect headphones or a small speaker and start exploring the radio spectrum.
Why This Project
The ATS-Mini firmware is built on the foundational PU2CLR SI4735 library (750+ stars) — the most comprehensive Arduino library for SI473X chips. The result is a polished, feature-rich radio receiver that rivals dedicated portable shortwave radios costing much more. The growing community regularly contributes new features and band configurations.
